Printing mechanism for adding-machines.



. PATENTIIII DEG. s1, `19671 W. E. GATBWooD. PRINTING MEGHANISM FONADDING MACHINES.

APPLICATION FILED PEB. 4, 190?.

5 SHEETS-SHEET ly PATBNTED DEG. 31, 1907.

W. P. GATNWOOD. PRINTING MEGHANIsM-POR ADDING MAGHINPS.A

APPLIGATION FILED FEB.4.1907.

.5 SHEETS-Sinn 2. v

Nl l my@ QN No. 875,343. PATENTED 13130.31, 1907.

W. F. GAIEWooD. PRINTING MBGHANISM PoR- ADDING MACHINES.

APPLICATION FILED FEB. 4. 1907.

No. 875,843. PATENTED DEG. 8l, 190'?A W, F. GATEWOOD.

PRINTING MEGHANISM FOR ADDING MACHINES.

f APPLICATION FILED PEB. 4. 1907.

. 5 SHEETS-SHEET 5.

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' 'WILLIAM Ik GATEWOOD, OF PIERCE UNiTED sijATEsPATENT OFFICE;

CITY, MISSOURI, ASSIGNOR OF ONE-THIRD TO ETHEL- vBERT P. LAMIKIN, OFST.`L OUIS, MISSOURI, AND ONE-THIRD TO WILLIAM W. LOO'K \E, OF

PIERCE CITY, MISSOURI.l

Aim 875,343.

Specification of Letters Patent.

PRINTING M'EcrrANIsM Fon Annina-MACHINES.

Patented ne. si, 19o7.

1 nppiimion nai .im 1a. 1906; semi 110.322.135; Divi'ddpia in, penadosnai February 4.1907, serai No. 355.618.

y June A1 Stl ffmiiiiverieiitpiairvie @o IV specification:

To all whoip'it con-cern:

Be it known that I, ILVLLIM F. 'GATE- WO0D, a citizen of the United-States of Amer- `vica, residing in Piercc City, in the county ofLawrence and State of Missouri, have invent# ed certain-.new and `usefulvIm rovem'ents in Printing Mc'chanisii'is for Adi iii'g-Machines,ofjwhich the' followiiigjis a full, clear, and exA ffact;description;reference being hadr tothe'- rawiiigs, forming part o l' this Figure,-

` 'withr ce 'f plan 'and v.partly 'in horizontal "section taken 7.Thebase. supports a carriage thatl is reL ciprocallyinounted thereon4and comprises uprightjsidebars 11 connected'by a spacing rod 13,'and-la; series slotted guide posts 17.

The'carriage side vbars are provided with for-A wardly extendinghorizontal arms 21 and rearwardly 'extendin horizontal arms. 22.

23 .are item -whees each of which bears upon its periphery the numerals1v to 9 f, and the .Ot si f Each'itemiwirdel bears at its side, pins`24,corresponding in number-to the number of characters upo'ii'theperipheiirof the wheel .and thecntiie series of iteni wheels is loosely.A

mounted upon a supporting shaft 25, seated in the horizontal carriageside bar arms 21 26 are type 4wheels of -a number equal to l that of theitei'nwheels, and each of which bears at its periphery type characterscorresponding to the characters borne by said f gagethe lates to' animprovement -iny prinftiiigliiicc -iiiis'm'sl'or'tliat character of Aadding machi-iieiutilized for eifrming rid-- `ditioniiiiiliilsofor-recording tie result fol the i* I 9.i s apa-per reel and adaptedtocontain a ribbon A of paper v von whic para mp1@repitaviewerthei f PlY eineclian. f wat horizomaifseciiong- Fig miie' fy thef'rnachinefjfFig'.

i, alongitudina seht-ion throu'glifthc `V Ina-, A chine..-Fig-.fVvlislfan enlargedlongitudinali through the '.-eentra lf"'aiit1rear part. of;

to be made on the paper by the type.

item wheels. The type wheels are su port# ed in alinernent with the itemwhee and Aloosely mounted upon the supportingshaft 29 are drop rackbars, eachof which is pro` yid'ed with rack teeth at both its 'edges toenhe rack bars are supported by t d y mentione wheels. reciprocatingcarriage previous pins of the item wheels and type e 89. designates apair of standards mounted ru'fon the rearportion of the base of themajournaled to Aa frame the items 'ofaddition are printed froin the typewheels 2 6.v The reel. iscon-'f I trollo'd i'xijitsrotation byfaspring'brake 91 `ithatfsattachedeto one of thestadards 89.:v

,andbea'rs agamston'e end of the rel, the de# :siied tension'upon thespring brakebeing secured by an adjustment screw 92.` 93 are'postsisurnio'u'nting the standards 89.

1 9 4jr are pape-r reed rollers' lnwing vshafts j'ournaled'i'n the posts93 to whichthe paper i's'deliverfd from thereel 90. In passing to therollers thc ribbon of paper travels 'in a course 'iii vjiixtaposition tothe type wheels 26.

95 designates a plurality of roller platens.

'thatiire arranged in opposition to the type-A vwheels 26-v and by whichthe ribbons of paper is carried to the characters on said type wheelsfor the purpose of causing impressions roller platens are carried byslide bars 96 veX- tending loiigitudinallyof the machine (see operate,the slots in the forward Wall being of eater height than the slots in'the rear Wall,

1 n order that said bars may be held in iiiclined 'positions with theirfront ends highest.'

type of the type whee s while performing the Thers 35 II and IY) thatare secured 'to the of 40 u'ide strips 10' "aiid t printing action, andthereby produce a more' perfect -impression upon the paper, due to a`more adual'printing than cou d be secured bis, direct forward pressureagainst the type. T e rearward movement ofthe platen carrying bars isrestricted by stop pins 99 that are seated in said-bars and are adaptedto engage the forwardframe wall 97." 100 are end walls of the platencarrying bar frame and 101 is across rodmountedin these end walls.l 102are s ring. lingers that extend over the roller p aten bars andtermilnatein `juxtaposition to the u er edges of said bars as seen inFig. V. liese springs ,are ada ted to resist theupw'ard movement ofvsaid ars in a yielding manner, in order that the roller platen's may beheld firmly, yet yieldingly, against the type of the type wheels duringtheir rising'movement in printiIlaction. l 103 designates a bumper framepivoted at 104 to the .standafds 89-and having a slotted cmsslhe'ad 105at its outer end. This bumper frame is adapted -to be elevated totherearl f 2515ile-f-theframe' in which the platen bars are locatedandthe `slots in its 'cross-head are of sufficient dimensions to perfnitthe rear profA jec'ting endsof said platen carryingbars pass :ingthroughthem except when sald slots are guardedin the manner to behereinafter'exe plained.'l Isn/.

.106 is a rear guide strip secured to the cross head of' the bumperframe. l x 107. are forwarded guide strips (see t e bumper frame. l 1 08are bumper slides which correspond in.v

number to .the'number of roller platenbars'f and which are looselypositioned between the e bumper frame cross ad 105' and .guide lstrip106 to be guided.

thereb during their sliding movement.- These umper slidesareprovided'with sto pins 109 -and 110 (see Figs. III and TVI;

whiph are adapted to strike. respectively a a n'st one of theguidestrips 1 07 and' against tigre bumper .frame cross.; head 105 toArestrict the movement ofthe slides. 'The bumperslides are adapted-to beniovedrearwardly by means to be hereinafter described, for the.

purpose of causing their reanends to close the slots in the bumper framecross head in order that said slides will/- trike against' 'any d e-,Qtired number of'thjl 4 roller platen bars ...9 6

'55 when the bumper.lA ame'is yelevated inte a vertical position.` 1 ,Il

1.11 is a brake bar pivoted to the bumper frame and extending across-the bum er slides,- thesaid brake bar being prefera ly provided at its'rear side'with varubber or other facing strip 112v which by bearingainst the. bumper slides' will create 'sufii clentfriction between saidparts to prevent ret ade movement of the'bumper slides in olirward7direction while they are being legI-49 'of the spacing plate 47. y

' gui ed. -One arrnof the bifurcated end ofy @sion ofthe typeof'saidwheel presented to;

.the ever is. moved forwardly the shoulder at elevated with the bumper4trarne to strike is adapted to be moved transversely'of the' base 'ofthe machine for the purpose of cans- A n ing it to engage againsttheinner ends of the burn er slides 108 and throw them rear- Wardll) to-close the slots in the bumper frame cross ead in the manner stated.

11.5 is.a lever pivotedat'116 to the caseof the'dnlachin'e (seeFigs. IIIandIV). The 8 0 rear arm of this lever is'provided withagj' -stem 117loosely seated in the le of the c am 113. .The forward'arm of the everis provided witha stemf118' loosely seated in the t will be seen thatwhen the spacing plate is moved to thedesired distance 1n the operationof .the machine, the lever 115 will be ac tuatedtliereby and willin turnimpart moviement to the c am 113 for the p ose of mov- 90 ing a numberofthe bumper sli 'es' 108 rea 1- Wardl to close the slots in the bumper'frame cross ead arid that the number of bumper slides` so movedwillcorrespond to the degree o fmovement of the spacing plate.

bumper frame 103 is elevated. This pull rod has abifurcated rear end'120.whichstraddles ale of a.standard.89 by which said bar isthe rod 119isH provided with a; notch 121 which provides'a shoulder in s'aid arm.The= 'shoulder is adapted to engage a stud 122 pro-- jecting from theyadjacent side of the bumper frame (see Fig. II) so that when thep'ullrod Vis moved forwardlythe bumpenframe will be elevated to a verticalposition for the pur ose ,Of carrying the bumper slides that have eenprojected' rearwardly, into impact with the` 'l 110 'i projectin r'earends of the roller laten bars 96. E ac bum er slide projecte is therebycaused to strilie against vthe companion platen bar to move said bartoward the corresponding type wheel and cause an impresward said platento vbe made u on the ribbon A of pa er through an ink rib on to be morepartie arly mentioned. 123 is a lever pivoted to a post 124 mounted onthe base-of the machine. This lever is pivotally connected at 12 5 tothepull rod 119. Whenthe lever is movedr'earwardly the notch 121 of theullrod receives'the stud 122, and when the rear end of said notch engagessaid stud for the pl ose of lifting the bum er frame, and as t e umperframe reaches t 1e limit of its upward v'movement and'strikes vthe framewall 98 a jarisoccasioned, due to which the pull rod is shaken `from thestud 122, thereby sa 119 designates` a pull rod by which the mediatelyinfront of the ribbon of paper delivered from the reel 90 to the feedrollers 94, the ribbon being directed in its travel by guide stems orrollers 13 1 (see Figs. l and lV). The ink ribbon leads to a spool 132which is yprovi ded with slot and pin connection with a vertical shaft133 that is loosely mounted in a bracket 134. The shalt P33 has fixed toit a ratchet Wheel 135. 136 is a .lever pivoted at 137 tothe standard S9adjacent to the pull rod 112') and with which pull rod said lever hasslot and pin connection at 13S (see Fig. l).

139 is a pawl pivoted to the upper arm ot the lever 136 and adapted toengage' the ratchet wheel 135 of the shaft 133 which carries the ribbonspool 132, whereby upon each rearward movement ol' said pnll rod,rotation is imparted to the ribbon spool shalt to Wind the ink ribbonthereon.

140 is a spring restraining arm attached to the bracket that supportsthe ink ribbon spool 132, and which by engaging with the ratchet wheel.1.35 serves to prevent retrograderotation of said spool. The upperpaper leed. roller 941 is provided. with a leed Wheel 141 andthe lowerpaper feed roller provided With a leed wheel lei-I2, these wheels beingrarranged in mesh with each other.

143 is spring controlled pawl carried by the 'upper arm oi the lever 136and arranged to engage the teeth olvl the leed Wheel 142, the pawlbeing?)` so a )plied to the lever that it will move lreelyrbeneath saidleed Wheel when the upper arm ot' the lever moved rearwardly and berestrained from swinging motioirwhen said lever arm is again .movedlorwardly, wlmreby the pawl is caused to operate said leed wheel torotate the feed rollers For paper feeding action. 144. is a spring stoparm which engages the up for feed Wheel 11i-l to restrain the icedrollers from retrograde retention.

145 is lrnob fixed to the shalt ol the lower leed roller 94. and bywhich the jl'eed. rollers may be rotated in intro lucingv the ribbon otpaper between them. i

l claim:

l. ln an adding;` machine printing nicchanism, \a type member, means ioroperating; said iype member, a roller platen. arranged for movementtoward said type member, and means causingy a Ytinwaril and upwardmovement for operating said .roller platen, so as to cause it to rollagainst the type o'l the type member, substantially as set forth.

'2. ln an adding machine printing mechan1sm,' a type wheel, means foroperating said wheel, a roller platen arranged for movement toward saidtype wheel, and means causing a forward and upward movement foroperating said roller platen so as to cause it to roll against the typeof the type Wheel, substantially as set forth.

3. ln an adding machine printing' mechanism, a type wheel, means foroperating said type wheel, a reeiprocally supported roller platenarranged for .movement toward said Wheel, and means'ior imparting aforward and upward movement to said roller platen, so as to canse it toroll against the type of the type Wheel, substantially as set forth.

4l. ln an adding` machine printing,` incohanism, a type wheel, means foroperating said wheel, a roller platen arranged for movement toward saidwheel, means llor imparting a forward and upward movement to said rollerplaten, and a support 'for'said platen arranged so as to direct itsmovement at an angle to the of said type Wheel and cause it to rollagainst the type of the type wheel, substantially as set forth.

v5. ln an adding;l machine printing mechanism, a type wheel, means loroperating said type wheel, a slide bar, a roller platen carried by saidslide bar, means for moving said slide bar forward and upward, so as tocanse the roller Adaten to roll over the type oi the type wheel and aspring bearing against one oi the 'laces oi said slide bar,substantially as set forth.

G. ln an adding machine printing mechanism, a'type member, a platenarranged for movement toward said type member, a slide bar by which saidplaten is carried, a swinginer bumper frame, and a bumper slide fittedto said frame and adapted to be moved into impact with. said platenslide bar, substantially as set `forth.

' 7. hi an adding machine printing, mechanism, a type member, a platenarranged for movement toward said type member, a slide bar by which saidplaten is carried a bumper trame provided with a slotted cross-head, abumper slide loosely mounted in said llrame, means for shitting saidslide into a position to close the slot in said cross-head, and meansior elevating said bumper frame to ,canse said'bnmpcr slide to strikeagainst said platen slide bar, `forth. i

8. ln an adding machine printing mechanism, a type member, aplatenarranged ttor movcmcmt toward said type men'iber, a slide bar by whichsaid platen is carried, a bmnper substantially as set trame providedwith a slotted cross-head, a

bumper slide loosely mounted in said frame, means i'or shifting saidslide into a position` to close the slot in saidl cross-head means forelsif'atingin said bumper frame to cause said bumper slide to strikeagainst said platen slide bar, and e brake carried by seid 4frame andadapted to bear egenstvseid bumper slide, substantially as set forth.

9. In an adding machine printing meeh- 5 anism, the combination of etype Wheel, mea-ns for operating said t pe Wheel, e platen, means bywhich said p aten is carried, e bum er frame, a 'series of bumper slidesloose y tted in seid rame and adapted to be elevated to seid platencarrying means, a Y eem arranged to engage seid bumper slides, e. s aengmember, and e lever connecting sai spacing member to seid cam, substantielly'as set forth. l

WVM. F. GATEWGQD, i In presence ofz* FRANK J. THIELEN, FLORENCEMGNAMARA.

